Apple bringing HealthKit to iOS 8

Along with all the other new features and enhancements coming to iOS 8, we got out first look at HealthKit. HealthKit provides a single place for all of your health-conscious devices like a fitness tracker or heart monitor to sync their data so it's available for apps to use. You'll have complete control over how your data is exposed and which apps have access (and vice-versa) for a fine-tuned experience that should provide exactly what you need, where and how you need it.